#1 Implement language
  Javascript (>=ES6)
  Python     (>=3.7)
  [...]
  
#2.Operator Overloading
  [...]
  
#3.Multi-langguage context compiler
  var list    = [1,2,3]; //native list
  var sqlList = #query(table.filter(t=>t.id>0)); //query context
  var pyList  = #python([ a for a in list if a%2==0 ]); //python context 
  [...]

#A SELECT
#1.code: table.filter( tbl=>tbl.id > 0)
  =>sql : SELECT * FROM table WHERE table.id >0
  
#2.code: table.filter( tbl=>tbl.id > 0).map(tbl=>["id"=>tbl.id,"full_name"=>tbl.name])
  =>sql : SELECT table.id AS id,table.name AS full_name FROM table WHERE table.id >0
  
#3.code: table.filter( tbl=>tbl.id > 0).map(tbl=>tbl.id)
  =>sql : SELECT table.id FROM table WHERE table.id >0

#4.code: table.filter( tbl=>tbl.id > 0).map(tbl=>tbl.id).sort(tbl=>tbl.id)
  =>sql : SELECT table.id  FROM table WHERE table.id >0 ORDER BY tbl.id ASC
  
#5.code: table.filter( tbl=>tbl.id > 0).map(tbl=>tbl.id).sort(tbl=>-tbl.id)
  =>sql : SELECT table.id FROM table WHERE table.id >0 ORDER BY tbl.id DESC
  
#6.code: table.filter( tbl=>tbl.id > 0).slice(1,3)
  =>sql : SELECT table.id FROM table WHERE table.id >0 LIMIT 1,3
  
#7.code: table.filter( tbl=>tbl.id > 0).join(table2,tbls=>tbls[0].refId=tbls[1].id)
  =>sql : SELECT * FROM table JOIN table2 ON table.refId = table2.id WHERE table.id >0 LIMIT 1,3 
  [...]

  [...]